knox and her ex-boyfriend were originally convicted of murder for the death of knox's roommate back in 2007. that conviction was overturned in 2011. prosecutors now want that ruling overturned. the court could decide to open a new trial in the case. >>> a southern california man is in the hospital with third-degree burns this morning after apparently lighting himself on fire. police sayed the 46-year-old man walked into a nail salon in coss s costa mesa where his estranged wife works. he doused himself in some sort of flammable liquid and lit himself on fire. he was taken to the hospital with serious burns over most of his body. >> his mother and two siblings were hurt after a display sign collapsed on top of them over the weekend. officials say the mother is still in a coma at the hospital and doesn't know her son was killed. >>> the display sign which weighed more than 300 pounds fell from the wall at the birmingham airport on friday. investigators are still trying to figure out what brought that sign down. >>> 6:41. a crucial decision in the search for a missing swimmer in half moon